salkar/referrer

module Referrer
  module ControllerAdditions
    extend ActiveSupport::Concern

    included do
      before_action :link_referrer_user_to_app_user

      def link_referrer_user_to_app_user
        current_object = send(Referrer.current_user_method_name)
        if current_object && referrer_user && !referrer_user.linked_with?(current_object)
          referrer_user.link_with(current_object)
        end
      end

      def referrer_user
        @referrer ||= begin
                        if cookies[:referrer_user].present?
                          obj = JSON.parse(cookies[:referrer_user])
                          Referrer::User.where(id: obj['id'], token: obj['token']).first
                        end
        end
      end
    end
  end
end